Bt-1685 - Imagine Selenio X100 Installation And Operation Manual

BT-1685

Overview
The X100 uses VANC data packets for the transmission of Inter-Station control data,
according to the ITU-R BT.1685 standard.
The BT-1685 data packet contains the following structure:
Figure 3-20 Inter-Station Control Data Packet Format
The UDW is further divided into a 1 word header, 248 data words and a 6-word ECC, as
shown in
Table 3-6 UDW Format
Word Count
Table 3-7
Table 3-7 Inter-Station Control Data Format
b7
b6
b5
b4
b3
b2
b1
b0
Words 8
Word Number 1-8
ADF
Ancillary Data Data Identification
Flag
Word 3
Count
Notes:

DID of inter-station control data packet shall be set to 143

SDID of inter-station control data packet shall be set to 101

DID: 25F and SDID: 1FE
h

Preferably, the inter-station control data packet is placed in the vertical ancillary data space (VANC)
Table 3-6.
UDW Format (255 Words)
Inter-Station Control
Data Header Word
1
and Table 3-8 show the structure of the 248-word ISC data format:
Video Mode
9 4 4 1
9-17 18-21 22-25 26
DID SDID
Second Data Data Count
Word Identification Word
1 1
in the range of the "user application" are used in some countries
h
Inter-Station Control
Data Word
248
Audio Mode
1 1 1
27 28 29
Selenio X100
Installation and Operation Manual
DC UDW
User Data Check Sum
Word Word
1 255
h
h
Error Correction
Parity Word (ECC)
6
Trigger Bits
Q8 Q16 Q24
Q7 Q15 Q23
Q6 Q14 Q22
Q5 Q13 Q21
Q4 Q12 Q20
Q3 Q11 Q19
Q2 Q10 Q18
Q1 Q9 Q17
1 1 1
30 31 32
69
CS
Word
1
Q32
Q31
Q30
Q29
Q28
Q27
Q26
Q25
1
33